{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778583001",
    "entityType": "User",
    "nonce": "0xbaaf5d8d40eccf012d0d2a5ea0d887f462a28f569dd5fb6aed35e2c48bb05586",
    "signature": "0x6489933cd3f58d930e5be5e4bb468cfbaf6885d5724efece6c8b60d4d5ed38f75f6aff45892047e0c61a2a272e95e8743a5cfca1ef3f91365ed2ddd8c96da5141c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}