{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3126a5f6cb0d3fb03a23ee31e64e97fab3536c7e41879d64871fe22a4d3a4134",
    "signature": "0x05265a82fbd491306bdfce6d4ce673ff324f6e6db8369c4dab2110a94be41541400d40c4ba7449319feb895350adc71b83e041e17c3610c136ba2c1331e5cd981b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}