{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10c2b76e9989464b4da69ae96e14331c89c42eaafe1e35fe34558aecf4e5d06a",
    "signature": "0x14ee3cdbb2501b1e49136282a23ec9a855fa850e2993be267df1f75592a8da4a5b35797e1ef48586e6b14cb1c879ae4daf81a3a9f6a59b5b73c15d19e42a8e1a1c",
    "signer": "0x22F93B86b5eA8CC635D81d747F4711f655949bB1",
    "userId": "395516443"
  }
}