{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x561b0e7cdc56f83610bb744e50fa01255aaeb3e10e83857fdf44a96ac4f60701",
    "signature": "0xf751a8c792e527ef6fa2b263b5af90b0f8be5f9d23d3df9ee7f61738674ee5bb64c00b8e47a07c31ca5507006fd319701278dffe5f3c0ecc90f91c34a86e961b1b",
    "signer": "0xe1f89084B704BB78f3E9778899F1cc0c6Eb15018",
    "userId": "895654416"
  }
}