{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1f5a1b917824a3bfa1a8b0af6c7f4bc1e66f58fef5eb11666442c101193e8c00",
    "signature": "0x43ef4513f9199047f673132c6af9d4aebc93b702b0e14bfec5b2253c7e3702852e0d401ad7b455e467848a5a9c5386113d887fb28e2fb93167af8ba1670911891c",
    "signer": "0xaA4f4Bb2BfFD9A74Dbf95452B59877605Cd7f840",
    "userId": "637907967"
  }
}