{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142213354",
    "entityType": "User",
    "nonce": "0x0b4aa3ad2fc9e522294f358dd6dc7fae01fb05813a7f9d2ebf2330e46a8cfe71",
    "signature": "0x459321f3128263f03a0eb1cf7806c6b9983dc2f9e494830b5cc3dda327783df336f6d74adc836a14eca154c3d64b3292e988fa108d17b7318b51cfdf97870a911b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}