{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x05fc30c3c271f2dd4187045d5b0371a44c2447a96f7cd85894d37ae728b2e217",
    "signature": "0x91315b68ffd6232dc94677ab9fb0b1290c67daf05b3d63d71ed6617619282f7f64e6e980ecdf47be8c423144c9bff7de439051347a20f29fe1ac054259fa13471b",
    "signer": "0x7ecD8f8E7fA97dC1b21dA7021DAc66098c6f1b8A",
    "userId": "745723312"
  }
}