{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9cd68fd631a95e12ab61530a88f0eeb60f77c286b118c8985b25f37ff97f9513",
    "signature": "0xde52c566f4ab2b18daae82bdd44ffe9f5ebc138f24b6e6b5e9a9d36b46d2e00d038902d229611ccfbc301a7b0b50bd628744934c2117364330f13714dae2bb1f1b",
    "signer": "0x603B64C3E849f28D295D60D19f846885109881d1",
    "userId": "906689705"
  }
}