{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaf49b895a69d8fad17c3962548e3fe53ffa648294b6d42c067d886985f90db5f",
    "signature": "0x7178dd7dda3f726106032436eb5e2f3c8c907270687ea73686e03d9d2cc58578713e9af0867a0a6535bd47ce279241c3df56e8ebb9dcc786073f3341a1de54b61c",
    "signer": "0x4b1A8281F6C7611C75f6c44f1D3B258B0143F613",
    "userId": "513956582"
  }
}