{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "488430169",
    "entityType": "User",
    "nonce": "0x1550fa47005e258961a9f0fcee36035ff6f0515c65fe50786ebef4c71b87dd1a",
    "signature": "0x72fde606678deff2cc3904617ba893aacd1826516f47b97f2777ca611af51ea717ec2d9d75321c563573035434ba6a2ee6102f4d23b154a867d69e1d92e98f281b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}