{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb6da9b1b518918fa950c6f1b0570ab180412d2e0810fa82023a83e9e6874bf97",
    "signature": "0x19e12a02c5918ed2581ccf2a756f1bb358803dd4062f2a76970977d5b93cd111466ec14fb19d991e72d4b8e626c779a3f0b2c0cfaf12cee93c293bfc580b1d481b",
    "signer": "0xc1498142DFa493b3D7160552B12AFAa00E3590F2",
    "userId": "58883767"
  }
}