{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0c09cd68bc29632ff68a239244f0d3dfe091bc0e2132d81744bff464fb66aaa6",
    "signature": "0x1fa9c1957637e4d3465e4b6a5b4073d4d5b8435f4f408c3ee8f72571650d33350098915ef1fc2a26d8dcdebe3a90f1c15ead20399803879de6c7547db6cb3b2a1b",
    "signer": "0xbb209dFA02d7f5409259002d4bc200AbfE1a3C12",
    "userId": "253189162"
  }
}