{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43754840",
    "entityType": "User",
    "nonce": "0x9e7979f852c436f06f5fc4671cbf7b44e2d39fc06de769fb28a6b646255ea2d8",
    "signature": "0x6345e8a2c53ce87aba95c330dd2c19df93461ab1288a72abf40fb46a6f7501546338be328e37083142c85b088752a0b94cbdf95352eea6c66bce945faf1fc4e91b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}