{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe2476582e97b8eb3bdf907c12243fccc6b900b520da1605efb86fc1f195d9048",
    "signature": "0x2c4929836c3ae66af44986075ce23c1ced20f4f72351d1a0839fc679f697818740e87fed25cc329f0cc8bf13f536a0b2edb784725543ed48fcf14d2b38480a271b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}