{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0c2fee9d7524c3409aa147e4e8edcfc40210fe516cf66550bf7aa7bc89806d01",
    "signature": "0xda380dbf9b6889f301aa5c599d6ff1a23464b999cd2a051b890e152cd296485c33cb2cca788bd1192065be1a4843bb630bc5cdee6f7326a4b11c3446040f67081c",
    "signer": "0x6F49372c9713298328De87d3376cEf1020FA192D",
    "userId": "632195573"
  }
}