{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa407af170ee0ddc935e50bf764b2b566391152a611b4673e7b3220bf3955242a",
    "signature": "0xc3a08b089fa84368e235b7eee5eac5028d5928dcfd6e2b4ee6bbad28c6e751421d87c01ae61f0ba0c2f70df83ef79b2d633c5354b9726b2c3a20e32833ff1fea1c",
    "signer": "0x52f7b2B9D6FFa5b184C438823662CAc970F19F7E",
    "userId": "260922694"
  }
}