{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x971012aa42ed9c304e5e835c4175787f7d4e01addd5948e97e034616ce324eb6",
    "signature": "0x2d0164164dea1fb81d324660a9ae65f3a56eb59e67353d38ba722df8110eeeb705390881fce554942d3ad920de957c32d007104675771fd0ad09880444c615851c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}