{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x303f6fdd2a1998c214993950deaec35bf18f5b0850efa6f800fa2461b88fe0a5",
    "signature": "0xc6140a30840bb119fea22270cafb7ac3fcff4f2bde49f44529e152cd713f0d5a545c26a831aacdfd35c2e2917128d837a1ff402155ed637d7e0cd50c6dd7831b1b",
    "signer": "0xb81F37e5a07cC28DEe619D298e732a131680DB32",
    "userId": "418741971"
  }
}