{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449938034",
    "entityType": "User",
    "nonce": "0x7c573a7cc76d9f40da4f51ac0c9ef7d4b9c0d34db87b11afa16d6f939ae80156",
    "signature": "0xdf1c815e6aa7ee6d118b5cbf3c0486e95befabc4b338ca963577649ea2f0676d11179b5335c9edfb88515f5b524464855c98462f53957608caee198064cf1f3d1b",
    "signer": "0x58E590293E7aC2D466d8902594f0f2Cad494dCeE",
    "userId": "921946884"
  }
}