{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x308c60cdbd836151cf51a5c96395b0ba824bf4ba8474dcf4e3701e5109476e82",
    "signature": "0x0be59a538916f3cc19afa6f5e55372431316884528101ac37b3d133b19f616a42855048c67725bc012d2dd3b212307e062619ab992b8d1ed653d47be9be7fe321c",
    "signer": "0x28e5eD52ba5180AFC861A9A5A69FDbb88B55D60A",
    "userId": "740761063"
  }
}