{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774741623",
    "entityType": "User",
    "nonce": "0xcfc681f3d8b090422752dc6e03238cc5e771690aec4e120be513cc14bef378b5",
    "signature": "0xcb2e9d21ff81b2eb91467ca7c771833b382dd3390e57704cbd2732daa64055f3001e95ad438bd80a170241348c8731ed5eb3f6c20e24a4d6082cc146c19714821b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}