{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29e1aeb025a07e2e32bfcf4c8180dde195784bffd6bbb57b7ee50b69bc702eeb",
    "signature": "0x0087385429d944931ec8cca58721efeeca5d07424da197904b022e5868f08b6b44c827d8d04262a42d59f6759b10204b4b87ea2032f5af2db7fc5dfd5b5d563e1c",
    "signer": "0xE35DcC5C816D790A9f730B4696F43Caf64d5d1e6",
    "userId": "603916020"
  }
}