{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeef02b642f027b12d7569f8ec2807ffefcbc5dea2c03cb228795f0ab4913f87d",
    "signature": "0x76b3f5d0b7ad7de1fab0b7fbcc10960dcf46a05b02b27ed43656250ad4d831be54d8c88e34d229a83eb82d85cd4ed7eb25b71b484273c00fdf5da5f04d4e55761c",
    "signer": "0x6712963BfE40124db8d5A809AaF4738AC862869e",
    "userId": "997637559"
  }
}